Table 1.
Matching variables and baseline characteristics of the study population.
| Cancer N=111 773 | Controls N=506 904 | Total N=618 677 | |
|---|---|---|---|
|
|
|
|
|
| N (%) | N (%) | N (%) | |
| Age-matching group | |||
| 20–29 | 5658 (5.1) | 27 938 (5.5) | 33 596 (5.4) |
| 30–39 | 13 124 (11.7) | 63 835 (12.6) | 76 959 (12.4) |
| 40–49 | 28 193 (25.2) | 132 440 (26.1) | 160 633 (26.0) |
| 50–60 | 64 798 (58.0) | 282 691 (55.8) | 347 489 (56.2) |
| Gender-matching group | |||
| Female | 62 405 (55.8) | 281 720 (55.6) | 344 125 (55.6) |
| Male | 49 368 (44.2) | 225 184 (44.4) | 274 552 (44.4) |
| Education-matching group | |||
| Primary & high school | 32 234 (28.8) | 132 123 (26.1) | 164 357 (26.6) |
| Vocational education | 45 218 (40.5) | 209 344 (41.3) | 254 562 (41.2) |
| Short further education | 5295 (4.7) | 25 355 (5.0) | 30 650 (5.0) |
| Bachelor education | 20 770 (18.6) | 99 661 (19.7) | 120 431 (19.5) |
| Long further education & research | 8295 (7.4) | 40 421 (8.0) | 48 677 (7.9) |
| Income-matching group (euros) | |||
| ≤-60 395 | 70 (0.1) | 339 (0.1) | 409 (0.1) |
| -60 394– -20 132 | 176 (0.2) | 861 (0.2) | 1037 (0.2) |
| -20 131– -1 | 1517 (1.4) | 7426 (1.5) | 8943 (1.5) |
| 0–20 131 | 28 672 (25.7) | 113 460 (22.4) | 142 132 (23.0) |
| 20 132–40 263 | 64 034 (57.3) | 299 177 (59.0) | 363 211 (58.7) |
| 40 264–60 394 | 13 198 (11.8) | 65 237 (12.9) | 78 435 (12.7) |
| ≥60 395 | 4106 (3.7) | 20 404 (4.0) | 24 510 (4.0) |
| Ethnicity | |||
| Danish | 103 841 (92.9) | 461 910 (91.1) | 565 751 (91.5) |
| Western | 3020 (2.7) | 15 217 (3.0) | 18 237 (3.0) |
| Non-western | 3660 (3.3) | 24 389 (4.8) | 28 049 (4.5) |
| Unknown | 1252 (1.1) | 5388 (1.1) | 6640 (1.1) |
| Comorbidity 5 years before | |||
| 0 | 103 006 (92.2) | 481 912 (95.1) | 584 918 (94.5) |
| 1–2 | 7771 (7.0) | 22 808 (4.5) | 30 579 (4.9) |
| ≥3 | 996 (0.9) | 2184 (0.4) | 3180 (0.5) |
| Sick leave 2 years before index date (weeks) | |||
| 0 | 93 930 (84.0) | 433 626 (85.5) | 527 556 (85.3) |
| 1–26 | 15 419 (13.8) | 64 121 (12.7) | 79 540 (12.9) |
| 27–52 | 2424 (2.2) | 9157 (1.8) | 11 581 (1.9) |
| NORDCAN cancer site | |||
| Breast | 23 550 (21.1) | ||
| Upper-gastro, intestines | 11 968 (10.7) | ||
| Melanoma skin | 11 913 (10.7) | ||
| Colorectal | 9958 (8.9) | ||
| Male genitals | 9905 (8.9) | ||
| Lung | 8359 (7.5) | ||
| Gynaecological | 8219 (7.4) | ||
| Central nervous system | 8167 (7.3) | ||
| Blood | 8069 (7.2) | ||
| Kidney & bladder | 6403 (5.7) | ||
| Other | 5262 (4.7) | ||